How is a realistic sourcing budget built when one house includes custom joinery, windows, hard finishes, sanitary ware, furniture, lighting, and shipping?
Context
Early in a project, a homeowner may know the floor area and an overall budget but not the final product schedule. Suppliers may respond with a low unit price, a room package, or an EXW subtotal. These numbers cannot be compared until the scope and cost boundary are normalized.
The specific problem
Multiplying floor area by one generic rate hides the products that actually drive cost. A 200 sqm house with simple windows and standard cabinetry is different from one with large glazed openings, extensive custom joinery, premium stone, and loose furniture. Freight, taxes, delivery, and installation can also turn a low product subtotal into an expensive landed route.
Our diagnosis
The budget must be built in layers. First establish measurable quantities and a specification band; then price each category against the same quote basis. Only after package volume and destination information are known can logistics and landed costs be estimated responsibly.
How we handled it
1. Convert the house into a measurable scope
We start with the room schedule and category list: cabinets by linear or square measure, doors and windows by opening, tiles and stone by area plus waste, sanitary ware and lighting by item, and furniture and soft furnishings by room. Missing categories remain visible instead of being assumed into a single allowance.
2. Set a specification band for every category
Budget, Standard, and Premium are working comparison bands, not quality guarantees. Each band is described by material, construction, hardware, finish, performance, brand level, and customization. The buyer can spend more on priority categories and use a simpler route elsewhere.
3. Normalize supplier quotations
Each quote is checked for quantity, size, material, finish, accessories, sample or mould cost, packaging, lead time, trade term, tax status, warranty, and replacement responsibility. EXW, FOB, CIF, and DDP figures are never placed in the same comparison column without adjustment.
4. Separate the China-side cost layers
Product value is shown separately from sourcing or design service, samples, quality-control visits, consolidation, export packing, domestic trucking, storage, documentation, and any special handling. The buyer can then see which parts change when suppliers or service scope change.
5. Add logistics from real packing information
A first allowance can be used for planning, but the shipping route is recalculated from carton and crate dimensions, gross weight, CBM, fragile-item method, loading plan, sailing date, destination port, address type, and trade term. Stone, glass, furniture, and custom joinery cannot share one generic packing assumption.
6. Build the landed planning envelope and reserve
Freight, insurance, customs, duties or taxes, destination handling, local delivery, installation, professional approvals, and contingency are shown outside the product subtotal. Where rates are unknown, they remain estimates or open items. The result is a planning envelope, followed later by a controlled quotation once drawings, quantities, and packing are frozen.
What was recorded
- The working model separates product value from sourcing service and destination-side costs.
- Quantities are calculated by category rather than from floor area alone.
- Supplier quotes are normalized to the same specification and trade-term basis before comparison.
- Freight planning is revised using package dimensions, weight, CBM, destination, and loading requirements.
- Unconfirmed taxes, installation, and local work remain estimates or exclusions rather than confirmed prices.
Result and current status
The buyer can see which decisions move the budget and can compare alternatives without confusing a product quote with a complete delivered-project cost. The model also shows which inputs must be confirmed before it becomes a quotation.
For a similar project
- Prepare a room schedule and include every product category under consideration.
- Choose the specification priorities instead of applying one quality level to the whole house.
- Compare all suppliers on the same quantity, material, finish, packaging, and trade-term basis.
- Keep product, service, freight, tax, delivery, installation, and reserve on separate lines.
- Do not treat a planning range as a fixed quotation or guaranteed landed cost.
Scope note
This method produces a planning budget from the information available at the time. It is not a supplier quotation, freight booking, customs ruling, tax advice, installation contract, or guaranteed final cost. Prices and exchange rates must be refreshed when the product schedule and shipping date are confirmed.
Based on FoshanBuild's current whole-house budget model, product schedules, quotation-comparison method, and logistics handoff requirements. Private client prices and supplier identities are excluded.